/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.zto.fire.core.util

import com.zto.fire.common.util.ValueUtils

/**
 * 单例工厂
 *
 * @author ChengLong
 * @since 2.0.0
 * @create 2020-12-18 14:02
 */
private[fire] trait SingletonFactory {
  @transient protected[this] var appName: String = _

  /**
   * 设置TableEnv实例
   */
  protected[fire] def setAppName(appName: String): this.type = {
    if (ValueUtils.noEmpty(appName) && ValueUtils.isEmpty(this.appName)) this.appName = appName
    this
  }
}
